Multi-layer molded articles

专利名称：Multi-layer molded articles发明人：Frederick G. Kudert,Maurice G.

Latreille,Robert J. McHenry,George F.Nahill,Henry Pfutzenreuter, III,William A.Tennant,Thomas T. Tung,John Vella, Jr.

申请号：US06/909404申请日：19860919公开号：US04745013A公开日：19880517

摘要：Injection molded and injection blow molded multi-layer substantially rigidplastic articles are provided, which, in preferred embodiments, include:

at least five layer plastic articles having side and bottom walls comprised of anoutside surface layer, an inside surface layer, an internal layer, and first and secondintermediate layers, one on either side of the internal layer, and having the terminal endof the internal layer encapsulated by intermediate layer material, whether it be solely orprimarily by first or by both first and second intermediate layer material. At least three-layer injection molded plastic containers are provided;

multi-layer injection molded plastic containers each of whose side wall is comprised ofat least three layers, wherein-- the ratio of the internal layer thickness in the bottom wallrelative to the total bottom wall thickness is on the average greater than the ratio of theinternal layer thickness in the side wall relative to the total side wall thickness,-- thebottom wall total thickness is less than the side wall total thickness and a portion of thethickness of the internal layer in the bottom wall is at least equal to the average

thickness of the internal layer in the side wall,-- the bottom wall total thickness is lessthan the total thickness of the side wall, and, in a central portion of the bottom wall, theinternal layer thickness is greater than the average thickness of the internal layer in theside wall, or-- the average bottom wall total thickness is less than the average side walltotal thickness, and at least a portion of the internal layer is thicker in the bottom wallthan the average thickness of the internal layer in the side wall.

申请人：AMERICAN NATIONAL CAN COMPANY

代理人：Paul R. Audet

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